The sound beneath Bellglass Square did not end when the lock finished turning.

It traveled upward through the foundations.

Stone groaned under Nessa's boots. Shelves trembled in the darkness. Somewhere to her left, loose papers whispered against one another, and Tavi swore as the archive table shifted beneath his hands.

"Nobody move," Rhydian said.

"Wonderful advice after the floor starts moving," Nessa replied.

Her wrist remained cold.

The darkness was absolute. The six memory crystals still lay on the cloth where Nessa had arranged them, but none gave off any light. The third crystal, which had activated the black-stone disk moments earlier, was completely dark.

Nessa reached toward where she remembered it lying.

"Wait," Rhydian said.

Her hand stopped.

"Why?"

"Because whatever just happened began when that crystal activated the disk."

"And standing in the dark will reverse it?"

"No. But repeating an unknown mechanism is rarely my first recommendation."

"Your profession sounds exhausting."

Ilya's voice came from somewhere behind the table.

"There is a striker lamp on the east wall."

"Which direction is east?" Tavi asked.

"The direction without the collapsing shelves."

A metallic clatter answered him.

"That was not sufficiently specific," Tavi said.

Nessa kept one hand against the table and felt along its edge until her fingers found the archive card she had placed there earlier. She slid it away from the edge before the shaking could knock it to the floor.

Beside it, Tavi's damaged chronometer gave one quiet tick.

Everyone heard it.

Tavi whispered, "The gears are still lifted."

Tick.

The sound beneath the square stopped.

Then the chronometer ticked again.

Nessa could not see its face, but she remembered the impossible thirteenth mark that had appeared beneath the cracked glass.

Rhydian said, "Do not touch the disk."

"Wasn't planning to," Tavi said.

A scrape came from the wall. A moment later, Ilya struck flint.

Once.

Twice.

On the third attempt, a tiny orange flame caught inside the archive's striker lamp.

The light was ordinary and weak, but it was enough.

Nessa saw that all four of them remained around the table. The six crystals were still arranged on the cloth, all of them dark. The archive card sat beneath her fingers. Mirelle's silver debt-stay card and Tavi's folded note remained inside Nessa's fastened pocket.

Tavi's chronometer lay where he had set it, its rear casing open, the gear mechanism still partly lifted. The black-stone disk remained wedged in the shallow space behind the gears.

The hands on the front dial had moved.

They now pointed toward the nonexistent thirteenth hour.

"That wasn't there before tonight," Tavi said unnecessarily.

Ilya brought the lamp closer.

A hairline seam had appeared around the chronometer's rim.

Nessa leaned over it.

"Was that part of your repair?"

"No."

"Any chance your clock has secretly contained ancient lunar architecture for years?"

"Very small chance."

Rhydian crouched beside the table rather than reaching for the device.

"The disk may be imposing its own structure on the mechanism."

"Meaning?" Tavi asked.

"Meaning the chronometer is not becoming ancient. The disk is using familiar machinery as an interface."

Nessa glanced at him. "You sound remarkably calm about a stone teaching my brother's clock new numbers."

"I am not calm."

"You hide it well."

"Practice."

The mark on her wrist warmed.

Not painfully.

Just enough to make her notice.

Nessa immediately withdrew half a step.

Rhydian saw the movement.

His expression tightened.

"The contract?"

"Yes."

Neither of them said why.

Tavi looked between them with renewed suspicion.

Nessa pointed at the chronometer.

"Ancient death-clock first. Emotional catastrophe later."

The warmth slowly faded.

Rhydian moved farther from her without comment.

That irritated her for reasons she did not intend to examine.

Ilya adjusted his lens over the dial.

"There are markings around the new hour."

Nessa bent closer.

Fine silver lines had appeared where ordinary engraving should have been. They resembled the crescents carved between the twelve points of the black-stone disk.

But the pattern was incomplete.

One crescent was brighter than the others.

The first.

Rhydian studied it.

"First seal breached."

Tavi's face hardened. "So this is counting seals?"

"Possibly."

"There are twelve Anchors," Ilya said.

Nobody needed him to finish the thought.

Nessa looked at the twelve crescents.

One bright.

Eleven dark.

"If every Anchor is a seal," she said, "then somebody just opened one."

"Or damaged it enough for the mechanism to consider it open," Rhydian said.

"Lantern Row's Anchor broke tonight."

"Yes."

Tavi stared at the dial.

"The people under the maintenance station said the first Anchor was open before this thing announced the same thing. They knew."

Ilya set down his lens.

"Which means they either caused the breach or were monitoring it."

Nessa's attention shifted to the third crystal.

It remained completely dark.

"They also said Rhydian was looking in the wrong century."

Rhydian's jaw tightened.

"I heard him."

"I know. I enjoy repeating unpleasant facts until they become useful."

"A charming investigative method."

"Thank you."

Tavi frowned at the chronometer.

"What century have you been looking in?"

Rhydian did not answer immediately.

"The Anchor failures I have investigated all appeared recent. Chronology reserves began declining within records from the past twenty-seven years."

Ilya's eyebrows rose.

"Twenty-seven?"

"That is the earliest verified depletion I found."

"But the ancient memory showed the Anchors being taken long before Vespera was lifted," Nessa said.

"Yes."

Ilya suddenly turned away from the table.

He crossed the archive to a cabinet secured by two ordinary iron latches rather than magic.

"What are you doing?" Nessa asked.

"Looking in the wrong century."

He opened the cabinet and began pulling out bound ledgers.

Dust rose into the lamplight.

"Most official Anchor maintenance records begin after the Elevation," he said. "Historians assume earlier references describe ceremonial foundations. I stopped assuming that several years ago."

"And?"

"And I copied things before the Archives decided my curiosity was professionally inconvenient."

He carried three thick books to another table.

Nessa collected the archive card from beneath her hand and slipped it into the outer fold of her pocket, separate from the note and debt-stay card. Then she gathered the six crystals one by one from the cloth and returned them to her fastened inner pocket.

She counted aloud.

"One. Two. Three. Four. Five. Six."

Tavi gave her a strange look.

"What?"

"Nothing."

"I have had an eventful night. I am counting everything I still own."

"Technically—" Tavi began.

"Do not say heart."

He closed his mouth.

Rhydian did not smile.

Which was probably wise.

Ilya opened the oldest ledger.

The pages were not original records but handwritten copies, each marked with dates and archive shelf references.

"Here," he said.

Nessa came beside him.

The copied passage was written in archaic civic shorthand.

Ilya translated.

"'Year forty-one after Elevation. Western Anchor chamber inaccessible. Lower seal remains under Council restriction. Keeper petitions denied.'"

Rhydian went still.

"Keeper?"

Ilya looked at him.

"Capitalized in the source."

Nessa felt a small chill.

"You weren't Keeper forty-one years after Vespera rose."

Rhydian's face revealed nothing.

"No."

"Was anyone?"

"The Hour Vault has had custodians for centuries. Keeper is an old title."

"Do you know their names?"

"Some."

"All?"

A pause.

"No."

Ilya turned several pages.

"There is more."

He read another copied entry.

"'Request for access denied by Astral authority. Lower histories transferred beyond standard chronology. Keeper instructed to preserve only post-Elevation hours.'"

Rhydian's eyes sharpened.

Nessa saw it happen.

"Wrong century," she said.

He looked at her.

"The Hour Vault was ordered not to preserve what came before Vespera was lifted," she continued. "So if someone wanted you investigating sabotage, they could let you find twenty-seven years of evidence while hiding the older cause completely."

"Assuming these records are accurate."

Ilya appeared offended.

"They are physical copies made from catalogued originals before those originals disappeared."

"That supports accuracy. It does not prove it."

"I dislike you less when you are suspicious of everyone equally."

A sudden bell rang overhead.

Once.

Then again.

Not from the archive.

From Bellglass Square.

Tavi looked upward.

"Emergency signal?"

Ilya listened.

Three short bells.

One long.

His expression changed.

"Structural evacuation."

Nessa's stomach dropped.

"Lantern Row?"

"Different district signal. Bellglass."

The floor trembled again.

This time the movement was not deep beneath them.

It came from directly outside the archive wall.

A thin line of silver light appeared between two foundation stones.

Nessa stepped back.

"Tell me that was already there."

"It was not," Ilya said.

The silver line lengthened.

Then another appeared beside it.

And another.

Together they formed the outline of the open eye and clock hand.

Tavi whispered, "That's the symbol."

Nessa reached instinctively toward her pocket.

The six crystals inside were cold.

Her contract mark was cold.

Whatever was happening was not being triggered by either of them.

Rhydian moved between Nessa and the glowing wall.

"Everyone back."

Tavi immediately bristled. "Don't order her—"

"He said everyone," Nessa snapped. "Enjoy being included."

They retreated from the stones.

The ancient symbol completed itself.

Something clicked inside the foundation.

Then a narrow section of wall shifted inward by less than an inch.

Not an illusion.

Physical stone had moved.

Cold air breathed through the gap.

It carried a smell Nessa could not identify at first.

Mineral.

Metallic.

Wet.

Ilya lifted the lamp.

His face had gone pale.

"There is no chamber behind that wall," he said.

Nessa stared at the widening black seam.

"You seem less certain than I would prefer."

"I mapped this annex myself. Behind that foundation is solid municipal bedrock."

The wall stopped moving.

A gap no wider than two fingers remained.

From somewhere beyond it came the faint sound of water.

Not pipes.

Waves.

Nessa could hear them drawing back over stone.

Her mouth went dry.

The ancient preserved memory had shown Vespera standing beside a silver sea.

A city that no longer existed on the ground.

A sea that should have been thousands of feet below them, if it existed at all.

Then a woman's voice whispered through the crack.

The same preserved voice that had spoken from the black-stone disk.

But this time it did not repeat the warning.

It said something new.

"Daughter of the last lunar line, if the first seal is open, do not trust the sky."

Nessa did not move.

The voice continued.

"The city was not lifted to save those above."

A beat of silence.

Then, from behind the wall:

"It was lifted to abandon those below."